Bitwise in Bash Scripting?

g'Afternoon,
I'm trying to use bitwise in a bash script I'm writing, but it's producing some odd results

if I do an 'echo $((11000000 & 11111111))'
It returns with '10586304', which is not the integer, nor is it the binary result. What am I missing for bitwise operations in bash?

Turns out it was a PEBKAC error.

Did not read up on the bitwise operator, just assumed it expected binary data. If I give in the proper integer, it works great lol.

Instead of $((11000000 & 11111111)), I should have used $((192 & 255))